Devcomponents Dotnetbar Visual Studio 2022
Toney Talbot
This has started happening recently (not too sure what caused the change unfortunately), but I can no longer select controls on my form. My reading on this has uncovered some possible explanations including:
For (1), no, it's definitely not running and for (2) my form is derived from DevComponents.DotNetBar.RibbonForm. For (3), no, they're not "locked" (I tried locking and then unlocking, in case some state was stuck in the designer, but no dice). The controls are on my form, not the base class form and the instances aren't private (I deliberately made them public just to test this one) and they were working fine before.
So, what can I do? I can select a control, like a ComboBox, from the Properties window drop-down list, change its properties and so on. But when I choose it nothing gets selected in the designer. I can select the form itself (by its border) and resize it in the designer. I can add a new control, like a label, and interact with it fine in the designer, so this is something that's happened to my existing controls.
This problem's main reason is because of older versions of components being used in a project and a newer version of the component has been installed on the machine. 9 times out of 10, the project is still pointed to the component in the GAC. Remove the reference to the component and re-add it from the newly installed component's location and all should work fine.
Well, I kind-of solved the problem, although I don't know what the actual cause was. In my program I'm referencing devcomponents.dotnetbar dll. I removed the reference and then re-added it, rebuilt the program and now everything's working in the designer as it should.
I had the same issue after moving a project to another PC. I didn't install DotNetBar on the new machine and just copied the DevComponents.DotNetBar.dll. I resolved it by also copying DevComponents.DotNetBar.Design.dll (contained in the old machine's DotNetBar installation directory) to the new machine and referencing it in the project.
The general issue is using references that no longer exist. For me, I had several versions of Infragistics controls and uninstalled all but the latest version. At least one of my references pointed to a DLL that didn't exist. Therefore, the seeming removal and re-adding essentially pointed the references to the correct (or present) DLLs.
I had that problem, and it was caused after I wrongfully played around with my "using" and "namespaces" in a blind attempt to get rid of an error. I saved each .cs file one by one and then closed VS and re-opened it. Presto, the little locks vanished.
I know this is an old post, but in case it helps someone else, my version of this problem was an inability to select controls on a tab page. Sending the tab page to the back didn't help. But I found I could get the controls highlighted by selecting them in the properties box and then placing the mouse over the control sizing arrows and right clicking, I could then bring the controls forward.
Visual Studio 2019, I close the form, and any files currently open that are associated with that form (.cs .rex) and then reopen them. This solved my 'not being able to select a control' problem. I find this problem occurs occasionally, and is a bit of a nuisance, but this simple fix always seems to work for me.
I ran into another variation on this theme. I'd placed Infragistics controls into a lib folder. The project would still compile/run, but for the controls to be selectable in the editor the project must reference the original installed controls. See Cannot select Infragistics controls in WinForms designer for more details.
I have a an application made by visual studio 2013 with crystal report and I have the windows server 2012 which has the database sql server 2014 , the crystal report is working on all devices windows 8 and windows 7 and windows 10 pro
CrystalDecisions.CrystalReports.Engine.InternalException: Failed to open the connection. Failed to open the connection. TrailerInvoice 5000_1720_3B7E7F4B-A6C7-466F-A408-13348394E544.rpt ---> System.Runtime.InteropServices.COMException: Failed to open the connection. Failed to open the connection. TrailerInvoice 5000_1720_3B7E7F4B-A6C7-466F-A408-13348394E544.rpt at CrystalDecisions.ReportAppServer.Controllers.ReportSourceClass.Export(ExportOptions pExportOptions, RequestContext pRequestContext) at CrystalDecisions.ReportSource.EromReportSourceBase.ExportToStream(ExportRequestContext reqContext) --- End of inner exception stack trace --- at CrystalDecisions.ReportAppServer.ConvertDotNetToErom.ThrowDotNetException(Exception e) at CrystalDecisions.ReportSource.EromReportSourceBase.ExportToStream(ExportRequestContext reqContext) at CrystalDecisions.CrystalReports.Engine.FormatEngine.ExportToStream(ExportRequestContext reqContext) at CrystalDecisions.CrystalReports.Engine.FormatEngine.Export(ExportRequestContext reqContext) at CrystalDecisions.CrystalReports.Engine.ReportDocument.ExportToDisk(ExportFormatType formatType, String fileName) at JJTrailerSoftware.frmInvoiceDetails.IDCanged(Invoice Tinvoice, CUser _User, Int32 samenInvoice) at JJTrailerSoftware.frmTrailerInvocie.lvInvoices_Click(Object sender, EventArgs e) at System.Windows.Forms.ListView.OnSelectedIndexChanged(EventArgs e) at System.Windows.Forms.ListView.WmReflectNotify(Message& m) at System.Windows.Forms.ListView.WndProc(Message& m) at DevComponents.DotNetBar.Controls.ListViewEx.WndProc(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m) at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
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